The paper was accepted to be presented, along with a public review by John W. Byers (Boston) that summarizes very well the paper, and then presents an account of the program committee discussions, primarily focused on research ethics.

In a nutshell the paper proposes using unsuspecting users browsing a popular website as measuring relays to detect censorship. The website would send a page to the users’ browser — that may be in a censored jurisdiction — that actively probes potentially blocked content to establish whether it is blocked. Neat tricks to side-step and use cross domain restrictions and permissions may have other…

"A good stock of examples, as large as possible, is indispensable for a thorough understanding of any concept, and when I want to learn something new, I make it my first job to build one." - Paul Halmos